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Ironman 70.3 Weymouth

Triathlon: Swim 1.2mi, Bike 56mi, Run 13.1mi
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There is no better seaside getaway than taking on an epic Ironman in Weymouth which is famous for holding sailing events for the Olympics and Paralympics. The swim is recognised as one of the best in the UK and it has one awards. A very friendly event which is incredibly organised.

Review summary

6 Reviews
  • Course
  • Organisation
  • Atmosphere


Ben K
"I'll review this through the 3 events, the swim (00:23) was shortened for the..."


Leighton K
"A really enjoyable race. This was my first 70.3 and the course was beautiful...."


Tom B
"Excellent organisation from all the guys at Ironman. Especially enjoyed the..."
See all reviews

Ironman 70.3 Weymouth route


Swim The swim course is one clockwise lap, in Weymouth Bay with a rolling start to reduce congestion.

Bike The IRONMAN 70.3 Weymouth bike course consists of one anti-clockwise loop through the rolling Dorset Countryside.

Run The IRONMAN 70.3 Weymouth run course begins with a run from transition at Lodmoor Country Park to the finish area. From here you will then complete 3.5 laps along Weymouth's esplanade. This provides a spectator friendly run course which enables athletes to get lots of support from family, friends and locals.


Swim: 1.2 miles in Weymouth Bay
Bike: 56 miles through Dorset
Run: 13.1 miles around Weymouth town centre

Cut-off times
Swim: 1 hours 10 minutes + a further 10 minutes from the swim cut off to start the bike
Bike: 5 hours 30 minutes (after you cross the swim start timing mat) + a further 10 minutes from the bike cut off to start the run
Run: 8 hours 30 minutes (after you cross the swim start timing mat)

Swim: Weymouth Bay, Weymouth
Transition: Lodmoor Country Park, Weymouth, DT4 7SX
Finish: The Esplanade, Weymouth, DT4 8ED


IRONMAN 70.3 Weymouth operates a clean transition. NO equipment can be placed on the floor, in or box or otherwise around your bike. Helmets must also not be placed on your bike. Anything left will be removed. You will be given coloured bags when you register for your bike and run gear.
NB: Cycle shoes can be on the bike as long as they are attached to the pedals. Nutrition and bike computers can also be left on the bikes as long as attached.

Blue Bag: Bike Gear, put all the kit you need for your cycle in this bag, including your helmet (DON’T forget your race number). You will enter the blue bag marquee upon exiting the swim, here you will change and then head to collect your bike.
Red Bag: Run Gear, put all the kit you need for your run in this bag. Once you have left your bike you will enter the red bag marquee, here you will change and head to the run course
White Bag: this bag is for your dry clothing that you require after the race. The white bags will be in the athletes finish area and available to collect as soon as you finish the race.

- When you come to rack, your bike, helmet and bags must have your race numbers securely applied to them. You must have your helmet on with the strap fastened and be wearing your race number.
- You will not have access to your blue and red bags on race morning but you can access your bike to place your drinks bottles and nutrition.
- You must have your helmet fastened before removing your bike from the rack and keep it fastened until you have placed your bike back on the rack having finished the course.

All bikes and transition bags must be racked on Saturday. Please see the Race Week Schedule for times.


- Wetsuits are compulsory
- All athletes must wear the official swim cap provided
- The swim is a rolling start which will start on land. Athletes will line up according to their own expected swim time. BE REALISTIC!
- It is a course is one lap clockwise
- The cut-off time to complete the swim is 1 hours 10 minutes after you cross the swim start timing mat
- Athletes have 10 minutes from the swim cut-off to start the bike

Bike Facts

- The IRONMAN 70.3 Weymouth course is a one lap anti-clockwise bike course traveling through the heart of Dorset. This will take in some spectacular scenery of the Jurassic Coast and pass through some picturesque Dorset villages. The course climbs 1000m.
- The course will start and finish at Lodmoor Country Park
- iPods, MP3 players, phones, video cameras etc. are not permitted on the course
- Your race number must be worn on your back

Note that athletes must be able to repair a puncture without assistance and should carry spare inner tubes and tools. IRONMAN will provide mobile and static support for other issues that athletes cannot fix themselves but these staff are not on call and we cannot guarantee that they will be available to assist with a problem.

- IRONMAN 70.3 Weymouth is a 3.5 lap run course through the seaside town of Weymouth
- iPods, MP3 players, phones, video cameras etc are not permitted on the course
- Your race number must be worn on your front

Event Details

What’s Included
  • Entry to Award Ceremony
  • Race Booklet
  • Race day nutrition at the aid stations
  • Athlete Backpack
  • Finisher T-Shirt
  • Finisher Medal
  • Athlete Village post-race food
  • Free Massages after the race
Raceday Logistics


All athletes must register in person at the event prior to race day to collect their race packs. Nothing gets sent out in the post! In order to register you will NEED:

  • Your BIB number (which will be uploaded around 1 week prior to race day)
  • Photo Identification (passport or driving licence)
  • Triathlon Race License. If you do not have a one a day licence can bought onsite for £5 WITH CASH ONLY.

You MUST attend registration yourself in order to race.

Under NO circumstance will we give your information to another person even with authorisation


9:00 - Athlete Registration - The Pavilion Car Park

9:00 - EXPO & Official IRONMAN Merchandise Store - The Pavilion Car Park

15:30 - Race Briefing One - The Pavilion


9:00 - Athlete registration - The Pavilion Car Park

8:00 - EXPO & Official IRONMAN Merchandise Store - The Pavilion Car Park

9:00 - Transition Open for Bike & Bag Check In - Lodmoor Country Park

Recommended times to rack to save long delays
9:00 - Race numbers 50-450

10:00 - Race numbers 451-750

11:00 - Race numbers 751-1050

12:00 - Race numbers 1051-1350

13:00 - Race numbers 1351-1650

14:00 - Race numbers 1651-2000

15:00 - Race numbers 2001-2400

16:00 - Race numbers 2401+

12:00 - Race Briefing Two - 70.3 & Relay - The Pavilion

13:00 - Race Briefing Three - 70.3 & Relay - The Pavilion

15:15 - Race Briefing Four - 70.3 & Relay - The Pavilion

18:00 - Ironprayer - Pavilion Theatre

5:00 - Transition Open - Lodmoor Country Park

7:00 - Male Pros - Lodmoor Country Park

7:02 - Female Pros - Lodmoor Country Park

7:10 - AG Self-Seeded Rolling Start - Lodmoor Country Park

7:30 - First Athlete Out of the Water - Lodmoor Country Park

9:00 - Official IRONMAN Merchandise Store - Lodmoor Country Park

14:00 - Transition Opens for collection of Bike & Bags - Lodmoor Country Park

17:30 - Awards Ceremony & Slot Allocation - The Pavilion


- Relays are teams with 3 or at least 2 members

- Every discipline (swim, bike and run) must be completed by one of the relay athletes. It is not possible to skip one of the 3 legs.

- All members of the Relay team must have registered and filled out their information 10 days prior to race day. If failed to do so, IRONMAN holds the rights to deny the team participation, giving no compensation. The change of a team member can be done until 10 days prior to race day. No changes will be accepted past this deadline.

- The top three relay teams will receive a trophy at the Awards Ceremony

Kit List


All you really need to finish a triathlon is a swimsuit, bike, bike helmet and running shoes. There's plenty of additional gear for each leg of the sport, and how much you buy depends on your goals and commitment. We recommend starting with high-quality basics and adding piece by piece as you get deeper into your training.


- Wetsuits are compulsory
- All athletes must wear the official swim cap provided


Can I use a hybrid/mountain bike?
Mountain bikes are not allowed. Your bike must be a road bike or a time trial bike, with road tyres fixed. If you have further questions about this please email us at [email protected] with your bike make and a photo and we will be able to help you.

Can I use Disc brakes?
Disc brakes are legal to use during 2019 IRONMAN 70.3 Weymouth. For future events please note we are subject to UCI rules and we are subject to any change they make.
Due to the nature of IRONMAN 70.3 Weymouth getting onto the bike course is very difficult. IRONMAN 70.3 Weymouth offers a closed road event and cyclists use these roads when exiting and entering transition. It is possible to park on-site before the event starts and Weymouth will then be a hive of activity throughout race day. There will be plenty for spectators to do around the seaside town for the family, before cheering you around town and watching you finish on the Esplanade.


Plenty of volunteers are required at the event to help out at Transition, Finish, Athlete Village. and more. To find out more about the roles, and to register your interest, please visit

Frequently Asked Questions

Can I qualify for the world champs taking part in this?
Yes there are 65 qualifying spots available.
Can I cancel my entry?
You cannot cancel your entry but you can change it to another event in the same calendar year
What do I get at the end of the race?
You will receive a Ironman backpack, T-shirt, medal, post-race food, free massages.
Is the Weymouth 70.3 swim start a mass start or rolling start?
The swim start in Weymouth Bay is a rolling start to avoid congestion.

Ironman 70.3 Weymouth weather forecast

Overcast throughout the day.

Predicted highs
Predicted lows
IconModerate breeze possible, up to 18mph

Meet the organiser

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"Swim 2.4 Miles. Bike 112 miles. Run 26.2. Brag for the rest of your life." - John Collins, IRONMAN co-founder Since its inception, IRONMAN has been represented by ambitious and courageous people who aren't afraid to push their limits. Take a walk through history with us, through some of the finest and most memorable moments in IRONMAN racing.

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Ironman 70.3 Weymouth reviews (6)

4.4 out of 5 stars

  • Course
  • Organisation
  • Atmosphere
  • Did the Half Ironman (70.3) in 2019

    A really enjoyable race. This was my first 70.3 and the course was beautiful. Super well organised and I had a lot of fun. The only downside was that they shortened the swim for the second year in a row. I don't think it should have been shortened this year. Hopefully they have a backup plan for future years. All in all, an awesome day out.
  • Did the Half Ironman (70.3) in 2019

    Excellent organisation from all the guys at Ironman. Especially enjoyed the pizza at the finish line.
  • Did the Half Ironman (70.3) in 2019

    We had a short swim and the cycle was amazing, I realy did love this part as it was a great route. Lots of support on the run with a great atmosphere.
  • Did the Half Ironman (70.3) in 2019

    I'll review this through the 3 events, the swim (00:23) was shortened for the second year in a row which as a terrible swimmer is fine by me but must be incredibly frustrating for the very good swimmers who have to stand around in transition for nearly 3hrs, with the rain, getting cold to do a 15minute swim, the bike (03:03) course was actually good fun, shame about the weather (as it would have slowed peoples avg speed down a bit) but the two hills were a very good test and at no point did i feel bored which can happen on long rides. The run (01:41) was basically flat so wasnt a challenge physically but mentally was very boring as it was just up and down the esplanade so you would see the same thing 6 times. Overall (05:21) though the event was brilliant and I thoroughly enjoyed it.
  • Did the Half Ironman (70.3) in 2016

    A long day out, but very enjoyable.
  • Did the Half Ironman (70.3) in 2018

    I could write 1000's of words about this but will try and keep it short- increidble day sums it up- can be a tough swim with soem big waves- fairly fast biek with mostly good roads (the odd track) and 3 climbs, a flat run with some great support and just 1 quiet section on each of the 3 loops
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